IBM Magstar 3494 Physical Volume States, Logical Volume States, Physical Volser Validity Checking

Physical Volume States

A volume is in the inventory if an entry (in the inventory) for the volser is in the database. The following states are associated with a physical volume:

Inaccessible

A volume is in the library manager inventory, but is currently in a location that is not accessible by the cartridge accessor.

Misplaced

A volume is in the inventory, and the library manager determines that it is not in the position indicated by the inventory.

Mounted

A volume is currently mounted on a drive or a mount was accepted for the volume.

Unreadable

The vision system read the external bar-code label on a volume that has a defect in the external label or the volume does not have an external label. This state is not modi®ed if the vision system is not operational.

Manual mode

The volume required movement when the 3494 was in Manual mode. The volume is ¯agged in the inventory as a Manual mode volume until it is successfully moved or audited in Auto mode or during inventory update.

Logical Volume States

A volume is in the inventory if an entry (in the inventory) for the volser is in the database. The following state is associated with a logical volume:

Mounted

A volume is currently mounted on a drive or a mount was accepted for the

volume.

Physical Volser Validity Checking

As a physical cartridge is added to the tape library inventory, the library manager

checks the volser to ensure that it is readable, is not already in the inventory, and is

not otherwise invalid.

The Convenience Input¤Output Station will be in either Import Mode or Insert Mode,

depending upon the capabilities of the VTSs in the library and the con®guration of

the library.

The Convenience Input¤Output Station is in Insert Mode when the library does not

have a VTS that is capable of Import/Export operations.

The Convenience Input¤Output Station is in Import Mode when the library has at

least one VTS that is capable of Import/Export operations.

The mode of the Convenience Input¤Output Station is stored so that the Library

Manager ªremembersº the mode across shutdowns. Once the mode is determined,

the stored mode is used each time the Library Manager initializes. The mode will

change if the con®guration changes or the VTS capabilities change.

52Magstar 3494 Tape Library Operator Guide